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CVE-2026-0543

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CVE-2026-0543

Published: Jan 13, 2026

Modified: Jan 13, 2026

PUBLISHED

CVSS v3.1

6.5

MEDIUM

Description

Improper Input Validation (CWE-20) in Kibana's Email Connector can allow an attacker to cause an Excessive Allocation (CAPEC-130) through a specially crafted email address parameter. This requires an attacker to have authenticated access with view-level privileges sufficient to execute connector actions. The application attempts to process specially crafted email format, resulting in complete service unavailability for all users until manual restart is performed.

VendorProductVersions

Elastic

Kibana

affected
8.0.0 - <= 8.19.9
affected
7.0.0 - <= 7.17.29
affected
9.0.0 - <= 9.1.9
affected
9.2.0 - <= 9.2.3

Weaknesses (CWE)

CWE-20

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

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